In modern times, though, this color coding seems to be no longer distinctively followed.įor instance, nowadays, you could easily come across USB devices that are black or white in color, but in fact be fully compatible with USB 3.x. White or Black USB Connector - Older Generation USBĭuring earlier generations of USB devices, a white USB connector would signify a USB 1.x compatible device, while a black connector would signify a USB 2.0 device. These connectors are usually found in laptops and desktop computers and are useful for charging external USB devices, such as smartphones. Red or yellow USB connectors always supply power, regardless of whether the host is inactive, standby or sleep mode. These connectors do not indicate any particular USB specification, but rather point towards a specific feature. Some USB devices may come with a red or yellow plastic body on the connector face. Red or Yellow USB Connector - Sleep & Charge These are one of the fastest USB devices available today, offering data transfer speeds between 5 – 20 Gbps. The color indicates that the device is USB 3.x compatible. Most USB devices that we see these days would have a blue colored plastic body on the connector face. The most common color indicators for USB devices are as follows. USB Type-A host controllers and devices usually follow a certain color coding on their connectors to indicate the USB version they support. In this article, we’ll help you to identify the version of USB supported by your host controller (on your computer) as well as that of the USB accessory (flash drive, data transfer cable, etc.) you’re trying to connect. So, the hardware limitations of one component (host or device) also limit the data transfer speed of the other. USB Type-A is usually cross-compatible if a USB 2.0 device is plugged into a USB 3.x port (or vice versa), the connection will automatically be downgraded to USB 2.0. And to ensure that you get high-speed data transfers from your USB storage, not only do you need a USB 3.x compatible device, the USB host controller installed on your computer must be 3.x as well. If you have a USB Type-C device, it fully supports the USB 3.1 & 3.2 specifications, which provides one of the fastest modes of data transfer, enabling a host of functionalities, including Gigabit Ethernet, 4K screen mirroring and more.īut external storage devices, like flash drives or external hard disks, often come with a regular Type-A connection. USB 3.0: Data Rate - Up to 625 MB/s (SuperSpeed) USB 1.0: Data Rate - Up to 187.5 kB/s (Low Speed) 1.5 MB/s (Full Speed)
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